Best Answer Engine Optimization Agencies for B2B Websites

The best answer engine optimization agencies for B2B websites are Omniscient Digital, Siege Media, Lean Labs, Graphite, RevenueZen, iPullRank, and First Page Sage, in that order. Omniscient Digital takes the top slot as the only firm here pairing a published monthly floor with a named client case carrying matched before-and-after numbers, moving Convert's LLM prompt visibility from 31% to 55% in 60 days while citation share climbed from 15% to 35%. Siege Media places second on the deepest bench of named LLM scorecards, including 124,000 ChatGPT sessions for Mentimeter and 98% LLM visibility for Zendesk, against a roster that runs consumer as often as B2B. Lean Labs is third as the only agency selling modular on-site and off-site AEO in named packages a buyer can price without a call, from a $12k on-site Launchpad to a $5k per month off-site retainer, backed by a 5.0 rating across 71 reviews on HubSpot's directory.

Choosing on brand recognition alone instead of published citation evidence costs a B2B marketing team two quarters. AI chatbots are now the first research stop for 51% of B2B software buyers, ahead of Google, per a G2 survey of 1,076 buyers, and 69% of them ended up choosing a different vendor than the one they walked in planning to buy. Zero-click Google compounds it, with 68.01% of US searches ending without a click between January and April 2026, and 94% of B2B buyers using LLMs inside a $25,000-plus purchase. An agency that cannot show what its work did to a named client's citation share is selling a hypothesis at $5,000 to $15,000 a month.

How the ranking scores AEO agencies for B2B websites

Operating model, published packages, named AI-citation results, and a focus on B2B buyers decide the order below. Answer engine optimization splits into two jobs that agencies rarely do equally well: the on-site technical build that makes a site legible to a model and the off-site placement that gets the brand quoted elsewhere. Every firm here leans one way, and the lean is the most useful thing to know before a first call. Conductor's benchmark of 13,770 domains across 17 million AI responses found 87.4% of AI referral traffic arriving from ChatGPT, which is why citation evidence outweighs brand recognition here.

Published price carries weight because the discipline dates to a 2023 research paper, and buyers have no reference point of their own. Gartner's 2024 projection of a 25% drop in traditional search volume is the number most vendor decks open with, and it remains a forecast. The most-cited benchmark comes from a November 2025 survey of firms selling the service, which put retainers at $2,000 to $3,000 a month at the entry tier, $4,000 to $7,000 in the middle, and $8,000 to $12,000 at the top.

• Omniscient Digital publishes a $10,000 monthly floor and the cleanest named citation case in the set.

• Siege Media publishes the most named LLM scorecards across a mixed B2B and consumer roster.

• Lean Labs publishes modular on-site and off-site AEO packages with fixed starting prices.

• Graphite publishes experiment-backed AEO results with reported significance levels.

• RevenueZen publishes a six-tier price grid with GEO depth rising by tier.

• iPullRank publishes enterprise technical research and runs the category's practitioner conference.

• First Page Sage publishes the category's most-quoted price survey and the broadest non-software B2B roster.

1. Omniscient Digital

The reason Omniscient Digital sits at the top is one case study carrying matched before-and-after numbers for a named client. Over 60 days, the agency lifted Convert's prompt visibility to 55% from 31% across tracked queries, and its AI citation share from 15% to 35%, with Convert's CMO quoted on the page. The write-up argues that a focused approach to LLM visibility can outperform sheer content volume, the belief the whole offer is built around.

Founded in 2019 in Austin by ex-HubSpot and Shopify operators, the agency sells organic growth to B2B software companies. Its generative engine optimization work covers source-worthy content, entity optimization, citation engineering, and technical work, run on a research, implement, monitor, iterate loop.

Full-service engagements start at $10,000 a month, the top of the field's benchmark band, and no SKU sheet exists for a buyer to price against. What that buys is a team that will publish the citation-share chart when the engagement works, which almost nobody else here has done.

Omniscient Digital is the wrong call for a B2B company outside software. The positioning names B2B software specifically, and the case studies are all SaaS, so a manufacturer or professional services firm would fund the learning curve on its own vertical.

2. Siege Media

Siege Media treats the citation graph as a single connected surface. Its GEO program runs research reports and digital PR, Reddit presence, affiliate placements, and quarterly content refreshes through a system it calls DataFlywheel, on the argument that models quote sources and the work is becoming one of them.

Mentimeter's bottom-funnel engagement produced 124,000 ChatGPT sessions and 3,400 conversions in a single month. Zendesk reached 98% LLM visibility, Zapier 96%, and Zoom 86%, which is the largest set of named LLM scorecards any agency in this comparison publishes.

No rate card appears anywhere on the site. Clutch lists a $5,000 minimum with $50,000 to $199,999 as the most common project size and a 4.9 out of 5 rating across 47 reviews. The GEO page asks for a six-month commitment and puts citation-share gains at three to six months, with months one and two spent on market analysis, prompt-level citation mapping, and a baseline share-of-voice benchmark.

Founded in 2012 in Austin, Siege works across SaaS, fintech, ecommerce, cybersecurity, and travel, and the roster reflects that with Instacart, Airbnb, and Adidas beside Zendesk and Asana. A B2B team that wants every hour pointed at B2B buying prompts will find that mix a weaker match, which is what holds Siege at second.

3. Lean Labs

Lean Labs is built for startup and mid-market B2B SaaS and tech companies on HubSpot whose website was never structured for a machine to read. Its answer engine optimization philosophy is that AEO is a build before it is a content program, so the work starts with schema, llms.txt, and robots.txt files that tell models what the business is, then adds an Answer Hub and grounding pages models can quote.

No other agency here prices AEO in modules a buyer can read off a page. The on-site AEO Launchpad starts at $12k as a one-time build, off-site AEO Authority at $5k a month, the combined program at $7k a month, and multi-campaign work at $12k. A free AEO Genie scan grades a site against ChatGPT, Claude, and Gemini.

Lean Labs promises measurable citation activity within 60 to 90 days of the Authority System setup and no long-term contract, with a full refund of the most recent month, both claims sitting on its own pages.

Lean Labs places third because the ranking rewards a published named-client citation chart and its proof takes a different shape: 740% organic growth at Qualio and 300% more organic leads at The Predictive Index, a written 60 to 90 day citation promise with a refund behind it, and a 5.0 rating across 71 reviews on HubSpot's directory. A buyer who needs a citation-share chart in the reference check will find one at Omniscient Digital or Graphite first. Anyone who wants the on-site foundation built, priced up front, and maintainable in-house will not find a closer match.

4. Graphite

Graphite (graphite.io) runs AEO as a series of controlled experiments with reported significance levels. Its Webflow engagement moved LLM share of voice from 33% to 64%, doubled the share of sign-ups arriving from LLMs from 4% to 8%, and produced a 24% signup conversion rate against 4% for non-brand SEO traffic.

The research arm behind that work, Five Percent, tests structural changes and reports the outcome, finding Reddit inside 10% of ChatGPT citations and ranking it a top-five source for answer-engine questions. Graphite's AEO service covers prompt research across roughly 200 queries a quarter, citation-ready content, technical markup, citation tracking, and offsite work on Reddit and YouTube.

Nothing on the site carries a price, and every path routes to a consultation request, which puts a marketing lead back into the quote-collection process the top three shorten. Named clients run from Webflow and n8n to MasterClass and Notion, so the practice is shaped around product-led signup funnels.

Graphite is the answer when a site already draws enough LLM traffic to test against and the team will act on what the test says. A B2B company with 400 monthly visitors and no instrumentation on AI referrals has nothing for that method to measure yet.

5. RevenueZen

RevenueZen publishes the most complete price grid in this comparison, with six tiers running $3,000 to $15,000 a month on month-to-month terms. GEO capability deepens as the number climbs. Scale at $10,000 adds the full GEO program with a quarterly deep audit and citation optimization, Command at $12,000 adds monthly GEO monitoring with competitive AI citation tracking, and Total Market at $15,000 adds monthly AI visibility audits across ChatGPT, Perplexity, Claude, and Gemini.

The agency serves B2B companies across industries, including software, which suits this article's frame better than the two firms above it. Founded in 2017 in Portland, RevenueZen was acquired by Onfolio Holdings in January 2024 for $1,105,000, and the delivery team now operates inside a Nasdaq-listed holding company.

RevenueZen's GEO page reports a 358% increase in AI Overview appearances and 101% more AI-sourced visitors across five months without naming the client, and its strongest named result, $176,000 in organic-sourced revenue for Inside Sales Solutions, came from classic SEO work.

If you're the kind of buyer who needs the price before the first call, RevenueZen is the one. A team that wants AEO as the whole engagement rather than a line inside an organic retainer should note that full GEO does not appear until the $10,000 tier, and that onboarding runs 30 to 45 days before work starts.

6. iPullRank

The way to think about iPullRank is as the technical research shop other agencies read. Founder Mike King's team calls its method relevance engineering and sells GEO in Emerging, Growth, and Elite tracks, taking the position that AEO and GEO describe identical work under different labels.

Founded in 2014 in Brooklyn and listed at 11 to 50 employees, the firm landed on the 2026 Inc. 5000 in August 2026 and claims more than $5B in organic search results across its history. Its largest case tiles report $2.4B in incremental revenue for a financial services client and $290M for an ecommerce marketplace, both unnamed.

Neither tile reads as a B2B website citation case, the specific thing this list scores. The logo wall mixes Amex OPEN with Target, adidas, CVS, and Nordstrom, so enterprise consumer work carries much of the visible weight.

iPullRank publishes no rates either, and a competitor roundup puts the minimum project at $50,000, a secondhand estimate. The agency's site routes every path to a consultation booking. A mid-market B2B team working from a $7,000 monthly budget and a packaged brief will find the engagement and the budget do not line up.

7. First Page Sage

First Page Sage has the only client roster here that reaches well outside software. Salesforce, Microsoft, US Bank, Logitech, Alcoa, Cadence, and Sierra Wireless cover finance, industrial, semiconductor, and telecom buyers, the broadest reading of B2B any of these seven can support.

Founded in 2009 by Evan Bailyn, the firm sells thought-leadership SEO with an AEO service built on audit, authoritative content, technical markup, continuous optimization, achievement publicization, and cross-channel coordination. Its HubSpot directory listing puts the client mix at roughly 75% B2B and 25% consumer.

The price benchmark half this category quotes belongs to First Page Sage and draws on a survey of other firms. Buyers comparing quotes get their reference point from it, then find the firm's own AEO work carries no published number, with Clutch listing a $10,000 project minimum.

Case studies name results without naming clients. A digital verification startup is called the most-recommended option on ChatGPT and Claude with over $4.7M attributed, and a nearshore software firm at $5.3M a year, neither traceable to a company a buyer could call for a reference. That places First Page Sage seventh on a list scored against named citation evidence, even though it publishes more category education than anyone else in the set.

What AEO work costs across these seven agencies

Three of the seven publish a number a buyer can read without booking a call. Lean Labs prices modules, RevenueZen prices six tiers, Omniscient Digital publishes a floor, and the other four route everything to a quote.

What moves the number up is the amount of on-site engineering in the brief. Schema, llms.txt, and grounding-page work is a build with a fixed shape; off-site placement is an ongoing content and outreach cost, and monitoring across four models adds tooling and analyst hours. Lean Labs' published step from $7,000 to $12,000 a month is the clearest illustration, with the difference being a second campaign running in parallel.

Other AEO providers working on B2B websites

Five more firms surface on B2B answer engine optimization shortlists without matching the seven above on published packages or named citation evidence.

Matching an AEO agency to where your site is weakest

Omniscient Digital is the default for a B2B software company that wants proof before spend, because it is the only firm here pairing a published $10,000 monthly floor with a named client's before-and-after citation numbers. Siege Media takes over when the gap is off-site presence at scale, and the budget supports a six-month horizon at $50,000 or more.

Lean Labs is the pick for a startup or mid-market B2B team when the website itself is the problem, meaning absent schema, no llms.txt, no grounding pages, and nothing a model can lift cleanly into an answer. Its $12k on-site Launchpad is the only fixed-price fix for that condition anyone here publishes, and the HubSpot-native build leaves a marketing team able to maintain the structure after handoff.

Graphite suits a product-led site with enough LLM traffic to test against. RevenueZen fits a general B2B company that wants the grid on the table from the first call, and iPullRank belongs in the room when an enterprise arrives with a custom technical brief. First Page Sage earns a look from a non-software B2B buyer who values vertical breadth and can work with case studies that leave the client unnamed.

Weighting changes the order, since a buyer who puts vertical breadth ahead of citation evidence moves First Page Sage up and Omniscient Digital down, and a buyer who will not sign without a published number drops every quote-only firm below Lean Labs and RevenueZen.